feat: Added automatic detection of rotated bbox in training utils

[fg-mindee]

This PR introduces the following modifications:

• adds a safeguard on sample plotting layout
• avoid inplace modifications of boxes during visualization
• added automatic detection of rotated bounding boxes

Any feedback is welcome!

[charlesmindee]

Thanks!

[codecov]

Codecov Report

Merging #534 (8d48748) into main (3c7303c) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #534   +/-   ##
=======================================
  Coverage   95.36%   95.36%           
=======================================
  Files         109      109           
  Lines        4184     4184           
=======================================
  Hits         3990     3990           
  Misses        194      194           

Flag	Coverage Δ
unittests	95.36% <ø> (ø)

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